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Cushion|Lab Grown|IGI

1.04ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG656488493

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG656488493

Diamond specifications and retailer prices

From £493 GBP
$660 USD
As of November 6, 2026
1 retailer carries this diamond
Only listing: £493 GBP at Brilliant Earth
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Brilliant Earth

About this 1.04ct lab-grown cushion diamond

This 1.04ct lab-grown cushion sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG656488493 or 656488493. Listed at a single retailer as of November 6, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.04
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle37.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG656488493
Dimensions5.97 × 5.96 × 3.74 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.97 mm5.96 mm1.04 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG656488493
Side View
Table 60.0%Crown 36.1°Girdle: MED-STKPavilion 37.2°Culet: NoneDepth 62.8%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 6
Current: £493 GBP|Low: £179 GBP|High: £1,173 GBP|Avg: £401 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
March 23, 2026
Retailer 7£179 GBP
Retailer 4£229 GBP
Retailer 6£274 GBP
Retailer 5£291 GBP
Retailer 8£344 GBP
Retailer 2£413 GBP
Brilliant Earth£493 GBP
Retailer 3£1,173 GBP

39 data points across 8 retailers

1 retailer

B
Brilliant Earth
17312425Y · Nov 6
£493 GBP
$660 USD
View

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B
1.04ct Cushion
£493 GBP